Bug 2513055

Summary: CVE-2026-11564 stgit: libcurl: Certificate validation bypass due to incorrect connection reuse [fedora-all]
Product: [Fedora] Fedora Reporter: Cedric Buissart <cbuissar>
Component: stgitAssignee: Felix Maurer <felix>
Status: CLOSED CANTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: decathorpe, felix, rust-sig, zbitter
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["4e93f5bc-0a7e-461d-9f83-8c76da1edcf1"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-08-10 10:09:37 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2173769, 2496754    

Description Cedric Buissart 2026-08-10 09:27:07 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

libcurl keeps previously used connections in a connection pool for subsequent
transfers to reuse if one of them matches the setup.

An easy handle that first uses default native CA trust can continue trusting
the native platform store after the application switches that same handle to
custom CA material for a later transfer.
Comment 1 Fabio Valentini 2026-08-10 10:09:37 UTC 
stgit links libcurl, but does not *include* it.
So this issue needs to be addressed in the curl package, and nothing can be done here.